5 year old water park tickets

[Cindy'smom]

We have the water park option left on four passes from 2002, from back before the tickets expired. We will need to upgrade one from a child pass to an adult pass. How does that work? Do we need to do it ahead of time, or at the gate? Do they just charge us the current price difference between a child pass and an adult? Thanks for your help!:snorkel:

[vamaggie]

Not sure if it is the same for the options but I believe that is the original "User" of the ticket was a child at the original time but has now
"graduated" to adult, they will upgrade the ticket for free.

[DisneyTwinsMommy]

That happened to us, we found a really old park ticket from before they expired. It was a child's ticket, and they upgraded it to an adult at no charge. I "would think" the same would apply to water park tickets, but I'm not 100%